This bag came included as part of a bundle. It fits my dreadnought guitar just fine and does a good job of protecting against dust and scratches. For what it is, it's price point, and intended purpose it works just fine. In fact, it's surprisingly affordable for the features and quality. Also, it's super light and folds away quite small when not in use.
However, as it is unpadded, it does very little to protect against impacts or crushing or such. On a practical level, it seems more suitable for safe storage of a guitar rather than actual travel or gigging.
That said, this bag definitely has a function - and for that function it works quite well.